paper

Kaluza-Klein black hole with negatively curved extra dimensions in string generated gravity models

arXiv:hep-th/0605031 · doi:10.1103/PhysRevD.74.021501

Abstract

We obtain a new exact black-hole solution in Einstein-Gauss-Bonnet gravity with a cosmological constant which bears a specific relation to the Gauss-Bonnet coupling constant. The spacetime is a product of the usual 4-dimensional manifold with a -dimensional space of constant negative curvature, i.e., its topology is locally ${\ma M}^n \approx {\ma M}^4 \times {\ma H}^{n-4}$. The solution has two parameters and asymptotically approximates to the field of a charged black hole in anti-de Sitter spacetime. The most interesting and remarkable feature is that the Gauss-Bonnet term acts like a Maxwell source for large while at the other end it regularizes the metric and weakens the central singularity.

4 pages, 2 figures, final version to appear in Physical Review D as a rapid communication

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